C 1500 Truck 2WD V8-350 5.7L (1989)
Technical Service Bulletin # 93C07A
Date: 930301
Recall - Automatic Transmission Vent
Number: 93C07
Section: 7A
Date: March, 1993
Subject:
PRODUCT SAFETY CAMPAIGN 93C07 - AUTOMATIC TRANSMISSION FLUID CONTAINMENT
Model and Year:
1988-93 C/K TRUCKS (ALL MODELS) WITH 5.0L, 5.7L & 7.4L ENGINES AND 4L60, 4L60-E & 3L80 AUTOMATIC TRANSMISSIONS
To: All Chevrolet Dealers
The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle which is subject to a recall campaign of this type must be
adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to repair within sixty (60) days after tender of a vehicle
is prima facie evidence of failure to repair within a reasonable time.
If the condition is not adequately repaired within a reasonable time, the owner may be entitled to an identical or reasonably equivalent vehicle at no
charge or to a refund of the purchase price less a reasonable allowance for depreciation.
To avoid having to provide these burdensome solutions, every effort must be made to promptly schedule an appointment with each owner and to repair
their vehicle as soon as possible. As you will see in reading the copy of the letter that is being sent to owners, the owners are being instructed to contact
the Chevrolet Customer Assistance Center if their dealer does not remedy the condition within five (5) days of the mutually agreed upon service date. If
the condition is not remedied within a reasonable time, they are instructed on how to contact the National Highway Traffic Safety Administration.
Defect and Vehicles Involved
DEFECT INVOLVED
General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1988-93 C/K model trucks equipped with certain
combinations of 5.0L, 5.7L & 7.4L engines and 4L60, 4L60-E & 3L80 automatic transmissions.
The transmission fluid in these vehicles, as a result of unanticipated heat generation in the transmission, may be forced out of the vent tube. The heat
generation is usually the result of trailering heavy loads at high speeds or high-load/off-road use. The vented transmission fluid may come in contact with
the catalytic converter and ignition of the transmission fluid may result.
To prevent the possibility of this condition occurring, dealers are to install a longer transmission vent hose routed to the left side of the vehicle.
VEHICLES INVOLVED
GMC Truck Vin Breakpoint
